Machine for perforating shoe parts



Se t. 15, 1936. P. R. GLASS MACHINE FOR PERFORATING SHOE PARTS 2 Sheets-Sheetl Filed Jan. 10, 1933 15, 1936. 'p R GLASS 2,054,077

I I MACHINE FOR PERFORATING SHOE PARTS I Filed Jan. 10, 1933 2 Sheets-Sheet 2 l/ENTUGL Patented Sept. 15, 1936 UNITED STATES PATENT OFFICE MACHINE FOR PERFORATING SHOE PARTS Application January 10, 1933, Serial No. 651,014

8 Claims.

This invention relates to punching machines and is herein illustrated as embodied in a machine for perforating shoe parts for purpose of ornamentation.

In the preparation of various shoe parts prior to assembling them to form a complete upper it is common practice to perforate stock by feeding it between a punch plate and a reciprocating punch. This operation may be carried out by machines of the type illustrated in United States Letters Patent No. 1,580,132, granted April 13, 1926, upon an application filed in my name. An object of the present invention is to provide an improved machinewhich, without sacrificing the characteristic advantages of machines of the type referred to as heretofore constructed, will facilitate accurate guiding of the work for operation of the punch along marginal portions thereof by gaging means which can be rendered inoperative when it is desired to perform punching operations upon the central portions of the work.

To this end, as illustrated, the invention provides a machine having novel mechanism comprising an anvil and a gage arranged for movement from inoperative position into operative position upon the anvil for guiding the work thereover. Preferably the gage is pivotally mounted upon a slide which is normally forced in a directionto move the gage into operative position, there being means provided for moving the gage heightwise of the anvil in locating it in position to engage the work. Preferably too, the gage carries a, holddown operative to engage the face of the work along marginal portions thereof to press the work against the anvil during the punching operations.

The construction above set forth, which is herein illustrated, is advantageous in that the gage and holddown are normally arranged for operation in guiding shoe parts for punching operations to be performed upon the marginal portions but at the same time can readily be moved tion of the machine illustrating the gaging mechanism in operative position;

Fig. 3 is a view similar to Fig. 2 illustrating the gage in retracted position; and

Fig. 4 is a plan view of the upper portion of the machine showing the gage and holddown in operative relation to the work.

As illustrated in Fig. 1 the machine comprises a frame In which supports a circular work table I2 in the central portion of which is located an anvil indicated generally by reference character I3 and including a punch plate l4 over which is adapted to be advanced a brass strip l6 carried by reels I8 and 20, the strip being guided over and held in position upon the punch plate by means of a clamping plate 22 which forms part of the anvil structure. Mounted for reciprocation relatively to the anvil is a plunger 24- on the lower end of which is carried a. punch 26 secured to the plunger by a clamp 28. arrangement is such that work positioned upon the table over the anvil is operated upon by the punch which serves also to feed the work between punching operations. For further details of the construction and operation of the parts thus far described, reference may be had to the aforementioned Letters Patent.

In order to guide the work as it is fed by the punch during operations performed by the punch upon the marginal portions of the work there is provided a gage 30 which comprises a body portion 32 having a lateral extension 34 terminating in a rounded Work engaging face 35 which in operative position extends substantially at right angles to the punch plate M with the lower portion of the extension positioned in a notch 31 in the clamping plate 22. To provide for retraction of a gage the latter is pivotally'mounted upon a U-shaped member 38 carried by a pin 40 secured to a plunger or slide 42 mounted in an opening Y 43 in a bracket 44 secured to the underside of the table l2 by screws 46. The slide 42 and consequently the gage 30 are normally forced in the direction of the anvil M and punch by a spring 43 engaging the forward surface of the slide and resting against the inner wall of a recessed block 50. The block 50 is secured to the bracket 44 by screws 52 by which the block can be adjusted to control a. tension of the spring 48. The bracket is provided with a slot 54 extending longitudinally thereof for receiving the pin 40. The gage 30 at its inner end is provided with a projection 56 to which is secured one end of a spring 58, the other end of which is attached to a pin 60 se- Qlllfitl to the slide 42 and likewise mounted for The movement in the slot 54. The purpose of the spring 58 is to tend to force the gage in a counterclockwise direction about its pivotal axis to maintainthe gage in contact with the bottom of the notch 31 when the gage is in operative position.

.Manually operated means is provided for moving the gage from operative to inoperative position and'vice 'versa; To this end there is mounted upon a pivot 62 carried by a lateral extension 64 of the bracket 44 a lever 66 having a forked end .68 adapted to engage the pin til. lVlovement of the lever 66 on the pivot in a clockwise direction as shown in Fig. 1 will result in retraction of the gage '30, inward movement of the lever being. limited by a stop pin it.

the lever is provided with 'a latch 'l'l adapted to enter into a notch 14 in the bracket extension 66,

the latch being slidable upon the lever being held therein by means of pins [6 whichextend through a lug l8 integral with the latch and positioned in 'arecess 80 in the lever. I i

In order to place the gage in operative position relatively to the anvil it is only necessary to pull out the latch '82 by means of a finger grip 82 against tension of a spring M which serves to holdthelatch in the notch 1 The spring 48 willfthen be effective to-force the slide 42 and the gage inward. Inward movement of the gage is limitedby means of an adjustable stop r 3.2 of the gage. V

raise the end of the gage above the anvil as the gage is forced inwardly by the spring 48. .tig'uous with the surface 9!) the cam has a flat surface 94 over which the projection 92 may ride screw 86 carried by bracket extension, 64 and arranged to engage the side of the lever 66.

To provide for the location of the work engaging-face of the gage 36 in operative position relatively to the anvilthereflisiprovided a cam 88 having an inclined face 9% adapted to engage a projection 92 upon the lower portion of the body This inclined surface serves to Conas the gage is moved inwardly over the edge of the anvil. Adjacent to thesurface 94, the cam has another flat surface 95. which is somewhat lower than the surface 94 which serves, to permit the lowering of the gage into contact with the ,upper portion of the anvil. Thus when the gage is moved inwardly it is raised heightwise of the anvil'by the inclined surface lil and'is then lowered into engagement with theface' 36 of the gage in position to contact with cdgeportions of the work such as a quarter iifilFigi.) thus to locate the edge of the work continuously at a fixed distance from the center line of the punch.

xThe operative position of the work-engaging thereof are being operated upon there is provided a holddown or stripper member in the form of a spring 62, having a work engaging portion I03 which extends beyond the face 36 of the gageand the other end of whichis'secured to the gage by ;a screw E94 extending through a, rib I06 upon the lower portion ofthebodyBZ-of the gage. In order to adjust the tension of the hold- 'down 102 there is provided an adjusting screw I08 the upper portion of which extends through In' order to 1101a the gage in inoperative position against the pressure .of the spring upon the slide 42 the outer end of the holddown and has a. shoulder I I0 engaging the under side thereof for supporting it. I

.When the machine is to be operated to perforate marginal portions of the work the gage 39 is positioned as shown in Fig. '2 with the Work engaging face 36 of the gage at a predetermined distance from the punch 26 so that a row of perforations produced in the work willfollow the edge thereof. The operator maintains the edge of the work in engagement with the face 36 of the gage and the work is held firmly against the I anvil it by the presser foot id!) and the holddown T Upon being reciprocated the punch 26 produces a row of perforations along the edge of the blank and feeds the work past the face of the gage. When, however, it is desirable to operate upon central portions of the blank, that is, as is frequently necessary, to follow a line of stitching at some distance from the margin, the operator throws the lever 68 to the left, in Fig. 11, until the latch 12 is engaged in the, notch 14. This results in the withdrawal of the slide 42 and the gage 30, and the spring 48 rotates the gage about its pivot to bring it out of the way below the surface of the table 12. When it isagain desired to operate upon marginal portions of the blank the latch '52 is withdrawn and the spring 48 forces the slide 42 inwardly, the cam 88 being operative to raise the gage over theedge of the anvil and. then to permit it to be lowered until the end portion of the gage isin contact with the anvil and the holddown I02 engages the upper surface 7 of the work. 7 7

Having described the inventlomwhat I claim as new and desire to secure by Letters Patent of the United States is: r r 1. A perforating machine comprising a work table, an anvil, a slide mounted upon the table,

a gage pivotally mounted'upon the slide, means for mounting the slide for movement toward.

and away from the anvil, means normally operative to force the slide toward. the anvil, and

in engagement with the anvil. V

2. A perforating machine comprising a work table having associated'ther'ewith an anvil, a slide mounted upon the under side ofthe table, a gage pivotallymounted upon the slide, means for forcing the slide toward the anvil, and a cam for controlling theposition of the gage. heightwise of the anvil during movement of the slide.

3. A perforating machine. comprising an anviL- a work table/a slide mounted upon the under side of the work table, a gage pivotally mounted upon the slide, means normally operativeto force means operable upon movement of the slide to-. ward the anvil for moving the gage angularly aboutits pivot to locate it in operative position the slide and gage toward the anvil, a cam for positioning the'gage heightwise of theanvil during movement of the slide, and manually operable means for retracting the slide.

" 4. A perforating {machine comprising a'work' is in normal position.

5. A perforating machine oomprisingan anvil,

a work table, a gage pivotally andslidably mounted for movement into andout of engagement with the anvil, and a work holddown mounted upon the gage.

6. A perforating machine comprising an anvil, a punch mounted for reciprocation relatively to the anvil, a slide mounted for movement transversely of the anvil, an edge gage pivotally mounted upon the slide, and means operable upon movement of the slide toward the anvil for moving the gage heightwise of the anvil into work locating position.

7. A perforating machine comprising an anvil, a punch mounted for reciprocation relatively to the anvil, a slide mounted for movement transversely of the anvil and punch, an edge gage pivotally mounted upon the slide, a spring tending to rotate the gage toward the anvil, and a cam for locating the gage in predetermined position heightwise of the anvil upon movement of the slide toward the punch.

8. A perforating machine comprising an anvil, a slide movable transversely of the anvil, a gage pivotally mounted upon the slide, a cam for controlling the position of the gage heightwise of the anvil, means for forcing the slide toward the anvil, and means for rotating the gage about its pivot for maintaining the gage in engagement with the cam during movements of the slide.

PERLEY R. GLASS 

